Eh, the title is fine. This phenomenon happens to have an interesting name, but it's not a lie, and "second sound" is an apt (if goofy) name for the phenomenon.

And honestly, this seems like a relatively important discovery in the world of physics. It's gaining a stronger understanding of the fundamentals of how matter interacts. We know a lot about specific properties of matter, but we know less about why any given element might have those properties. This seems like the kind of thing that can help explain what's actually going on, why matter sometimes behaves in unusual ways.